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src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp@4dfb2df418f2 (annotated)
src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp
Thu, 22 Sep 2011 10:57:37 -0700
- author
- johnc
- date
- Thu, 22 Sep 2011 10:57:37 -0700
- changeset 3175
- 4dfb2df418f2
- parent 3086
- eeae91c9baba
- child 3466
- b4ebad3520bb
- permissions
- -rw-r--r--
6484982: G1: process references during evacuation pauses
Summary: G1 now uses two reference processors - one is used by concurrent marking and the other is used by STW GCs (both full and incremental evacuation pauses). In an evacuation pause, the reference processor is embedded into the closures used to scan objects. Doing so causes causes reference objects to be 'discovered' by the reference processor. At the end of the evacuation pause, these discovered reference objects are processed - preserving (and copying) referent objects (and their reachable graphs) as appropriate.
Reviewed-by: ysr, jwilhelm, brutisso, stefank, tonyp
| ysr@777 | 1 | /* |
| tonyp@2962 | 2 | * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved. |
| ysr@777 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ysr@777 | 4 | * |
| ysr@777 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ysr@777 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ysr@777 | 7 | * published by the Free Software Foundation. |
| ysr@777 | 8 | * |
| ysr@777 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ysr@777 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ysr@777 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ysr@777 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ysr@777 | 13 | * accompanied this code). |
| ysr@777 | 14 | * |
| ysr@777 | 15 | * You should have received a copy of the GNU General Public License version |
| ysr@777 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ysr@777 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ysr@777 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| ysr@777 | 22 | * |
| ysr@777 | 23 | */ |
| ysr@777 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP |
| stefank@2314 | 26 | #define SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP |
| stefank@2314 | 27 | |
| ysr@777 | 28 | // The following OopClosure types get specialized versions of |
| ysr@777 | 29 | // "oop_oop_iterate" that invoke the closures' do_oop methods |
| ysr@777 | 30 | // non-virtually, using a mechanism defined in this file. Extend these |
| ysr@777 | 31 | // macros in the obvious way to add specializations for new closures. |
| ysr@777 | 32 | |
| ysr@777 | 33 | // Forward declarations. |
| ysr@777 | 34 | enum G1Barrier { |
| ysr@777 | 35 | G1BarrierNone, G1BarrierRS, G1BarrierEvac |
| ysr@777 | 36 | }; |
| ysr@777 | 37 | |
| tonyp@961 | 38 | template<bool do_gen_barrier, G1Barrier barrier, |
| johnc@3086 | 39 | bool do_mark_object> |
| ysr@777 | 40 | class G1ParCopyClosure; |
| ysr@777 | 41 | class G1ParScanClosure; |
| iveresov@1696 | 42 | class G1ParPushHeapRSClosure; |
| ysr@777 | 43 | |
| iveresov@1696 | 44 | typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure; |
| ysr@777 | 45 | |
| ysr@777 | 46 | class FilterIntoCSClosure; |
| ysr@777 | 47 | class FilterOutOfRegionClosure; |
| tonyp@2968 | 48 | class G1CMOopClosure; |
| ysr@777 | 49 | |
| ysr@777 | 50 | #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES |
| ysr@777 | 51 | #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined." |
| ysr@777 | 52 | #endif |
| ysr@777 | 53 | |
| ysr@777 | 54 | #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \ |
| ysr@777 | 55 | f(G1ParScanHeapEvacClosure,_nv) \ |
| ysr@777 | 56 | f(G1ParScanClosure,_nv) \ |
| iveresov@1696 | 57 | f(G1ParPushHeapRSClosure,_nv) \ |
| ysr@777 | 58 | f(FilterIntoCSClosure,_nv) \ |
| tonyp@2968 | 59 | f(FilterOutOfRegionClosure,_nv) \ |
| tonyp@2968 | 60 | f(G1CMOopClosure,_nv) |
| ysr@777 | 61 | |
| ysr@777 | 62 | #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES |
| ysr@777 | 63 | #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined." |
| ysr@777 | 64 | #endif |
| ysr@777 | 65 | |
| ysr@777 | 66 | #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f) |
| stefank@2314 | 67 | |
| stefank@2314 | 68 | #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1_SPECIALIZED_OOP_CLOSURES_HPP |
